<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>vue测试</title>
</head>
<script src="js/vue.js"></script>
<body>
    <div id="app">
        <input type="text">
        {{msg}}
    </div>
</body>
<script>
    let app = new Vue({
        el:"#app",
        data:{
            msg:"My first Vue",
        }
    });
</script>
</html>